Yuta Ono, a failed contender, was unable to gain admittance to the university of his dreams in Tokyo where his high school sweetheart, Minori Tajima, was enrolled. Consequently, he was forced to become a ronin. Disagreements with his father over the family business led Ono to a dilemma where he had to move out with only 10,000 yen. Luckily, he chanced upon Nutopia, a rental house in search of a male tenant. However, Ono was in for a surprise as he discovered that the house was occupied by five pretty girls between the ages of 20 and 30. This predicament was particularly daunting considering his girlfriend situation with whom he hadn't broken up yet, posing a significant distraction to his life as a ronin.
